Over the past two years, there has been an increasing presence of integrated communication, navigation and remote sensing in technology planning and application design, with “Starlink” serving as a prominent example in the rapid advancement. As a result, the integrated communication, navigation and remote sensing technology is becoming an increasingly important research focus in the global development of mega-constellation of satellites. In this paper, we investigate the system, application and key technologies of integrated communication, navigation and remote sensing. After comprehensively analyzing the technical implementation at various levels and taking “Starlink” constellation as a typical case study, the development strategy and technical architecture of integrated communication, navigation and remote sensing was deeply discussed. On this basis, we proposed the flat self-organizing integration strategy and present a novel framework based on “task driven and empowerment on-demand” approach as a suggestion for future research.